usb host读写U盘！

可用于单片机的方法同程序，尚未通过验证，大家慎用，也许不错-Single-chip method can be used with the procedure, has not yet been validated, we used with caution, and perhaps a good

常用数据库包（pcb）组件。。。。。。。。。。。。。。。。。。

语音芯片PM50八方源代码，在播音函数中写入你需要播音的例子即可播放对应的语音。-voice chip PM50 from all source code, the audio function you need to write radio broadcast of examples corresponding voice.

opencan librarys from phytec

keil c6.20c 直接嵌入汇编的方法-Keil c6.20c embed compilation methods

LCD源程序，51是负的然后到LCD，然后控制脚的好地方再编译液晶显示器.asm暂停时，LCD会产生我们写的结果

用C51制作的红外通讯装置，有详细的源代码，可以直接使用-C51 produced by the infrared communication device, a detailed source code, can be directly used

基于NRF905无线收发模块的无线按键程序-NRF905 wireless transceiver module based on the wireless key procedures

modbus的CRC源程序,单片机89S52,汇编语言代码-Modbus CRC source, the microcontroller 89S52, assembly language code

让数码管的亮度一致,原代码是运行在AT89S52上,12MHz-The brightness of the digital control line, the original code is run on AT89S52 on, 12MHz